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Published on: 21/06/2021
QB365 provides detailed and simple solution for every Creative Questions in class 12 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
The phenomenon of reversion of mature cells to meristematic state leading to callus formation is___________
Redifferentiation
Dedifferentiation
either (a) or (b)
none of these
2.
Assertion (A) : Development of root from callus is called caulogenesis.
Reason (R) : Caulogenesis is the final step of protoplasmic fusion.
Both A and R are correct but R is not a correct explanation to A
R explains A
A is correct R is incorrect
Both A and R are incorrect
3.
The optimal pH of culture medium is generally ___________.
Acidic
Basic
Neutral
Slightly basic
4.
Which of the following condition favours callus induction?
Temperature of 25°C ± 5°C with 12 hours of photoperiod
Temperature of 25°C ± 2°C with 18 hours of photoperiod
Temperature of 25°C ± 5°C with 14 hours of photoperiod
Temperature of 25°C ± 2°C with 16 hours of photoperiod
5.
Identify the group of scientists who developed the intergenic hybrid - the pomato.
Yamada et al.
Horsh et al.
Takebe et al.
Melchers et al.
1.
(b)
Dedifferentiation
2.
(d)
Both A and R are incorrect
3.
(a)
Acidic
4.
(d)
Temperature of 25°C ± 2°C with 16 hours of photoperiod
5.
(d)
Melchers et al.
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
